Differential car-wheel.



C. H. SCHREIBER, JR. DIFFERENTIAL CAR WHEEL APPLICATION FILED SEPT. 8, 1915.

1,163,781. Patented Dec. 1 1, 1915.

" nnrrnn stems, Parana @FFTQE j cHAnLns n. sonnnnsnn, an, or CHICAGO, ILLINOIS.

DIE FERIETITIAL CAR WI-IEEL.

Specification of Letters Patent.

Patented Dec. 1a, 1915.

Application filed September 8, 1915. Serial No. 49,553.

To aZZ whom, it may concern.

Be it known that I, CHARLES H'. SoHREI- BER, J12, a citizen of the United States, residing at Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Diflerential Car-Wheels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention is directed to railroad rolling stock and particularly to the wheels thereof whereby free relative rotation of one Wheel of an axle with relation to the other wheel thereon may be had.

In railway car construction, the Wheels are shrunk or otherwise formed on the axle so that a nonrotatable connection is had and this conduces to a serious disadvantage in that when a train is goin around a curve the wheels on the inner sice thereof rotate faster or tend to rotate faster than the wheels on the outside and friction is thereby produced which causes an excessive wear of both the wheels and the rails and also interferes substantially with the smooth movement of the cars.

It is therefore broadly an object of the invention to provide means whereby the wheels on an axle may have relative rotation and it is more specifically an object to provide a simple and efliciently strong and durable structure whereby this may be accomplished.

It is further an object to embody such a structure with car wheels in such manner that such wheels may be secured on a car axle in the usual manner.

With the above and other objects and advantages in view, the invention resides more particularly in the novel combination, formation and arrangement of parts as more fully described hereinafter and pointed out in the appended claim.

Reference is had to the accompanying drawings, wherein similar characters of reference designate corresponding parts through out the several views, and in which:

Figure 1 is an end view of a car Wheel constructed in accordance with the present invention. Fig. 2 is a central vertical sectional view taken transversely therethrough. Fig. 3 is a perspective view of the body portion of the wheel.- Fig. a is a perspective view of the hub portion thereof.

Referring now more particularly to the accompanying drawings, 5 designates an axle portion of a railroad car on which is secured in the usual manner of securing the hub of an ordinary wheel, the hub member 6 of the improved structure, this hub member 6 being formed on its periphery with a cylindrical bearing face 7 having its intermediate portion cut away to form a bearing race 8.

The body of the wheel includes the usual flange 9 and the integral web portion 10 which is off-set at the inner side of the Wheel and has its inner portion thickened toward said side to provide a bearing face 11 coincident with the face 7 of the hub. The inner face of the web adjacent the bearing face is provided with an annular groove 12 and provided in the bearing face is a series of roller bearings 13 which extend into the groove 12. For holding the body of the wheel on the hub by means of these roller bearings an annular securing plate 14 is provided which seats Within the confines of the tire and in the space formed by otfsetting the web portion and which is provided in its periphery with a bearing face 15 provided with a cutaway portion 16 in its inner portion receiving the roller bearings 13. The plate is secured to the body by a series of bolts 17 passed through said plate and the web portion of the body. Thus the roller bearings 13 serve also in addition to their normal function as bearings to hold the bodv of the tire against lateral displacement from the hub. This is accomplished by providing said bearings of a relatively great size so that sufiicient strength is had to insure against the shearing action encountered upon going around a curve.

In operation, only one of these wheels need be provided on an axle, as there is no necessity for the other wheel to turn with relation to the said axle. This improved wheel may be secured on axles in the manner of securing the ordinary car wheel and this greatly facilitates the adaptation of the wheel to types of rolling stock now in use.

l Vhile I have illustrated and described a particular embodiment of my invention, I have merely done so for the sake of convenience and I do not wish to be limited to that particular embodiment as it is obvious that numerous changes may be made within the details of construction thereof without in any way departing from the spirit of the invention as claimed.

WVhat I claim is: V

A differential wheel comprising a hub portion provided in its periphery with an annular bearing race, a body portion including a tire and an off-set web portion provided in its inner periphery with a cutaway portion opening on its inner side, an annular securing plate secured to the inner side of the web portion and provided also in its inner periphery with a cutaway portion opening at its inner side and a series of bearings disposed in the race and extending in both of said cutaway portions to retain the body against displacement laterally from the'hub.

In testimony whereof, I affix my signature, in the presence of two witnesses.

CHARLES Y H. SGI-IREIBER, J R. Witnesses:

JOHN F. OTTO, MARY KUYPER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

